/* =====================================================
   太加海外 · 官网骨架样式
   风格：can-leading 70%（克隆重奢，留白克制）
   配色：金 #C9A961 + 蓝 #1E5BA8
   ===================================================== */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold: #C9A961;
  --gold-light: #D9C089;
  --blue: #1E5BA8;
  --blue-dark: #0F2A4F;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-mute: #888;
  --line: #e8e8e8;
  --bg: #fafaf7;
  --white: #ffffff;
  --serif: "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: var(--gold); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

/* ----- Header / Nav ----- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 44px; }
.brand-name { font-family: var(--serif); font-size: 20px; color: var(--ink); letter-spacing: 1px; }
.brand-sub { font-size: 11px; color: var(--ink-mute); letter-spacing: 2px; }
nav.main-nav { display: flex; gap: 36px; }
nav.main-nav a {
  font-size: 15px; color: var(--ink-soft); font-weight: 500;
  position: relative; padding: 4px 0;
}
nav.main-nav a.active,
nav.main-nav a:hover { color: var(--ink); }
nav.main-nav a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--gold);
}

/* ----- 汉堡菜单（≤768px 启用，桌面端整体不渲染） ----- */
.nav-toggle { display: none; }
.mobile-nav { display: none; }

/* ----- Buttons ----- */
.btn {
  display: inline-block; padding: 14px 32px; border-radius: 2px;
  font-size: 14px; font-weight: 500; letter-spacing: 1px;
  transition: all .25s; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--gold); color: var(--white); }
.btn-primary:hover { background: #b89a52; color: var(--white); }
.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--white); }

/* ----- Section ----- */
section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 64px; }
.section-eyebrow {
  display: inline-block; color: var(--gold); font-size: 13px;
  letter-spacing: 4px; text-transform: uppercase; margin-bottom: 16px;
  font-weight: 500;
}
.section-title {
  font-family: var(--serif); font-size: 38px; color: var(--ink);
  font-weight: 500; letter-spacing: 2px; margin-bottom: 16px;
}
.section-lead { color: var(--ink-soft); font-size: 16px; max-width: 720px; margin: 0 auto; }

/* ----- Hero (index)  底图为八城拼图，白色五边形承载标题 ----- */
.hero {
  position: relative; min-height: 720px;
  background-color: #f2f0e9;
  background-image: url('assets/banner.jpg');
  background-size: 128% auto;
  background-position: center 54%;
  background-repeat: no-repeat;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; text-align: center;
}
@supports (background: url('x.webp') format('webp')) {
  .hero { background-image: url('assets/banner.webp'); }
}
.hero .container { position: relative; z-index: 2; max-width: 880px; }
.hero-eyebrow {
  display: inline-block; color: #8A6D28; font-size: 13px;
  letter-spacing: 6px; margin-bottom: 26px; font-weight: 500;
}
.hero-title {
  font-family: var(--serif); font-size: 60px; color: var(--blue-dark);
  font-weight: 500; letter-spacing: 8px; line-height: 1.3; margin-bottom: 22px;
}
.hero-sub {
  font-size: 19px; color: var(--ink-soft); letter-spacing: 2px; margin-bottom: 42px;
  font-family: var(--serif);
}
.hero-cta { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.hero .btn-primary { background: var(--gold); color: var(--blue-dark); }
.hero .btn-primary:hover { background: var(--gold-light); color: var(--blue-dark); }
.hero .btn-outline { border-color: var(--blue-dark); color: var(--blue-dark); }
.hero .btn-outline:hover { background: var(--blue-dark); color: var(--white); }

/* ----- Service 三档 ----- */
.services { background: var(--bg); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.service-card {
  background: var(--white); padding: 48px 32px; text-align: center;
  border: 1px solid var(--line); transition: all .3s; position: relative;
}
.service-card:hover { border-color: var(--gold); transform: translateY(-4px); }
.service-card::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 40px; height: 2px; background: var(--gold);
}
.service-icon {
  width: 56px; height: 56px; margin: 0 auto 24px;
  border: 1px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); color: var(--gold); font-size: 24px;
}
.service-card h3 { font-family: var(--serif); font-size: 22px; margin-bottom: 12px; letter-spacing: 1px; }
.service-card p { color: var(--ink-soft); font-size: 14px; }

/* ----- Cases 三件套 ----- */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: var(--white); border: 1px solid var(--line);
  overflow: hidden; transition: all .3s; cursor: pointer;
}
.case-card:hover { box-shadow: 0 12px 40px rgba(0,0,0,.08); }
.case-img { aspect-ratio: 4/3; overflow: hidden; background: #f0f0f0; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-body { padding: 32px 28px; }
.case-tag {
  display: inline-block; padding: 4px 12px; background: rgba(201,169,97,.1);
  color: var(--gold); font-size: 12px; letter-spacing: 1px; margin-bottom: 12px;
}
.case-card h3 { font-family: var(--serif); font-size: 20px; margin-bottom: 12px; }
.case-card p { color: var(--ink-soft); font-size: 14px; margin-bottom: 16px; }
.case-meta { display: flex; gap: 16px; font-size: 13px; color: var(--ink-mute); border-top: 1px solid var(--line); padding-top: 16px; }
.case-meta strong { color: var(--gold); font-weight: 500; }

/* ----- About 页 ----- */
.about-hero { background: var(--bg); text-align: center; padding: 120px 0 80px; }
.about-hero h1 { font-family: var(--serif); font-size: 52px; letter-spacing: 3px; margin-bottom: 24px; }
.about-hero .quote { font-family: var(--serif); font-size: 22px; color: var(--ink-soft); letter-spacing: 2px; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); }
.value-item { padding: 48px 32px; text-align: center; border-right: 1px solid var(--line); }
.value-item:last-child { border-right: none; }
.value-num { font-family: var(--serif); font-size: 56px; color: var(--gold); margin-bottom: 8px; }
.value-label { font-size: 16px; color: var(--ink); font-weight: 500; }

/* ----- Business 页 ----- */
.biz-list { display: grid; gap: 24px; }
.biz-item {
  display: grid; grid-template-columns: 80px 1fr; gap: 32px;
  padding: 40px; background: var(--white); border: 1px solid var(--line);
  transition: all .3s;
}
.biz-item:hover { border-color: var(--gold); }
.biz-num {
  font-family: var(--serif); font-size: 48px; color: var(--gold); line-height: 1;
}
.biz-content h3 { font-family: var(--serif); font-size: 24px; margin-bottom: 12px; letter-spacing: 1px; }
.biz-content p { color: var(--ink-soft); }

/* ----- Cases 页 ----- */
.case-detail { margin-bottom: 96px; }
.case-detail-head { text-align: center; margin-bottom: 48px; }
.case-detail-tag { display: inline-block; padding: 6px 20px; background: var(--gold); color: var(--white); font-size: 13px; letter-spacing: 2px; margin-bottom: 16px; }
.case-detail h2 { font-family: var(--serif); font-size: 36px; letter-spacing: 2px; margin-bottom: 16px; }
.case-detail .case-sub { color: var(--ink-mute); font-size: 16px; }
.case-detail-img { aspect-ratio: 16/9; max-width: 800px; margin: 0 auto 48px; border: 1px solid var(--line); overflow: hidden; }
.case-detail-img img { width: 100%; height: 100%; object-fit: cover; }
.case-timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin: 48px 0; }
.tl-item { text-align: center; padding: 24px 12px; background: var(--bg); position: relative; }
.tl-item::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 8px; height: 8px; background: var(--gold); border-radius: 50%;
}
.tl-date { font-family: var(--serif); color: var(--gold); font-size: 18px; margin-bottom: 8px; }
.tl-label { font-size: 13px; color: var(--ink-soft); }

/* ----- Contact 页 ----- */
.contact { background: var(--bg); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 920px; margin: 0 auto; }
.contact-card {
  background: var(--white); padding: 48px 32px; text-align: center;
  border: 1px solid var(--line);
}
.contact-icon { font-family: var(--serif); font-size: 32px; color: var(--gold); margin-bottom: 16px; }
.contact-card h3 { font-family: var(--serif); font-size: 18px; margin-bottom: 12px; letter-spacing: 1px; }
.contact-card p { color: var(--ink-soft); font-size: 22px; font-family: var(--serif); letter-spacing: 1px; }
.contact-card small { display: block; color: var(--ink-mute); font-size: 12px; margin-top: 8px; }

/* ----- 八大承诺 · 悬停浮层 -----
   浮层铺满整格，而不是悬浮在格子外面：4×2 栅格行间距为 0，浮层一旦探出格外，
   第二行悬停时必然压住上排卡片的标签。改为整格覆盖后，任何视口宽度都零遮挡，
   也不必再为浮层预留标题净空。 */
.values-grid { position: relative; z-index: 1; }
.value-item { position: relative; cursor: help; }
.value-item:hover { z-index: 30; }

.value-num, .value-label { transition: opacity .22s ease; }

.value-tip {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 24px;
  background: var(--blue-dark);
  color: rgba(255,255,255,.92);
  text-align: center;
  font-size: 13.5px;
  line-height: 1.95;
  letter-spacing: .3px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .28s ease, visibility .28s;
  z-index: 40;
}
.value-tip::before {
  content: '';
  flex: none;
  width: 30px;
  height: 2px;
  background: var(--gold);
  margin-bottom: 15px;
}

@media (hover: hover) {
  .value-item:hover .value-num,
  .value-item:hover .value-label { opacity: 0; }
  .value-item:hover .value-tip { opacity: 1; visibility: visible; }
}

/* 触屏无 hover：说明文字直接常显，否则看不到内容 */
@media (hover: none) {
  .value-tip {
    position: static;
    display: block;
    padding: 0;
    background: transparent;
    color: var(--ink-soft);
    opacity: 1;
    visibility: visible;
    text-align: left;
    font-size: 12.5px;
    line-height: 1.7;
  }
  .value-tip::before { display: none; }
  .value-item { cursor: default; padding-bottom: 28px; }
}

/* ----- Footer ----- */
footer {
  background: var(--blue-dark); color: rgba(255,255,255,.7);
  padding: 64px 0 32px; font-size: 14px;
}
footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; margin-bottom: 48px; }
footer h4 { color: var(--white); font-family: var(--serif); font-size: 16px; margin-bottom: 16px; letter-spacing: 1px; }
footer ul { list-style: none; }
footer ul li { padding: 6px 0; }
footer a:hover { color: var(--gold); }
/* .copyright 也命中 footer .container 的 grid 规则，会把备案号 <a> 甩到第二列，
   这里改回块级流式排布，保证版权与备案号同一行 */
footer .copyright { display: block; text-align: center; padding-top: 32px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.4); }
/* 备案号链接：按规定链向工信部，字色略高于版权正文 */
footer .copyright .icp { color: rgba(255,255,255,.58); }
footer .copyright .icp:hover { color: var(--gold); text-decoration: underline; }

/* 中屏：标题降一档 */
@media (max-width: 1200px) {
  .hero-title { font-size: 50px; letter-spacing: 5px; }
  .hero-sub { font-size: 17px; }
}

/* 窄屏五边形变窄，小标题压不住照片，加白底标签保证可读 */
@media (max-width: 1150px) {
  .hero-eyebrow {
    background: #fcfcfc;
    padding: 8px 20px;
    border-radius: 2px;
  }
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  nav.main-nav { display: none; }

  /* 汉堡按钮：三横线，展开后转叉 */
  .nav-toggle {
    display: block;
    width: 40px; height: 40px;
    margin-right: -8px;
    padding: 0;
    background: none; border: 0; cursor: pointer;
    position: relative;
  }
  .nav-toggle span {
    display: block;
    width: 22px; height: 2px;
    margin: 0 auto;
    background: var(--blue-dark);
    transition: transform .28s ease, opacity .2s ease;
  }
  .nav-toggle span + span { margin-top: 5px; }
  .nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

  /* 面板：自 header 下沿滑出的深蓝全宽块 */
  .mobile-nav {
    display: block;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--blue-dark);
    border-top: 1px solid rgba(201,169,97,.25);
    box-shadow: 0 18px 40px rgba(15,42,79,.28);
    opacity: 0; visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .28s ease, transform .28s ease, visibility .28s;
  }
  .nav-open .mobile-nav { opacity: 1; visibility: visible; transform: translateY(0); }
  .mobile-nav-list { display: flex; flex-direction: column; padding: 8px 0; }
  .mobile-nav-list a {
    display: block;
    padding: 12px 20px;
    font-family: var(--serif);
    font-size: 16px;
    letter-spacing: 2px;
    color: rgba(255,255,255,.8);
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,.07);
  }
  .mobile-nav-list a.active { color: var(--gold); }
  .mobile-nav-tel {
    display: block;
    padding: 15px 20px 17px;
    text-align: center;
    font-size: 14.5px;
    letter-spacing: 2px;
    color: var(--gold);
  }
  .hero { min-height: 600px; background-size: cover; background-position: center 54%; }
  .hero-title { font-size: 36px; letter-spacing: 2px; }
  .hero-sub { font-size: 16px; margin-bottom: 34px; }
  .hero-eyebrow { font-size: 11px; letter-spacing: 4px; margin-bottom: 20px; }
  .hero-cta { gap: 14px; }
  .hero .btn { padding: 12px 24px; font-size: 13px; }
  .section-title { font-size: 28px; }
  .service-grid, .cases-grid, .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .value-item { border-bottom: 1px solid var(--line); }
  .case-timeline { grid-template-columns: repeat(2, 1fr); }
  .biz-item { grid-template-columns: 1fr; gap: 16px; }
  footer .container { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
}

/* 触屏无 hover：完整文本直接常显，避免看不到 */


/* ----- Projects 页 · 项目手册 ----- */
#usa, #greece, #hk { scroll-margin-top: 140px; }

.proj-jump {
  position: sticky; top: 76px; z-index: 90;
  background: rgba(255,255,255,.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.proj-jump .container { display: flex; align-items: center; gap: 4px; overflow-x: auto; }
.proj-jump a {
  padding: 15px 18px; font-size: 14px; color: var(--ink-soft); white-space: nowrap;
  border-bottom: 2px solid transparent; letter-spacing: 1px;
}
.proj-jump a:hover { color: var(--gold); border-bottom-color: var(--gold); }
.proj-jump .proj-jump-cta { margin-left: auto; color: var(--gold); font-weight: 600; }

.proj-note { padding: 40px 0 0; }
.proj-note p {
  max-width: 1020px; margin: 0 auto; font-size: 13px; color: var(--ink-mute);
  border-left: 2px solid var(--gold); padding-left: 16px; line-height: 1.9;
}

.proj-head { max-width: 900px; margin-bottom: 48px; }

.proj-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line);
  margin-bottom: 56px;
}
.proj-stats .stat { background: var(--white); padding: 28px 20px; text-align: center; }
.stat-num { font-family: var(--serif); font-size: 32px; color: var(--gold); letter-spacing: 1px; margin-bottom: 6px; }
.stat-label { font-size: 12.5px; color: var(--ink-mute); line-height: 1.6; }

.proj-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.proj-alt { background: var(--bg); }
.proj-alt .proj-block { background: var(--white); }

.proj-block {
  background: var(--white); border: 1px solid var(--line);
  padding: 40px 36px; position: relative; overflow-x: auto;
}
.proj-block::before {
  content: ''; position: absolute; top: 0; left: 36px;
  width: 40px; height: 2px; background: var(--gold);
}
.proj-block h3 { font-family: var(--serif); font-size: 22px; letter-spacing: 1px; margin-bottom: 22px; }
.proj-block ul { list-style: none; }
.proj-block ul li {
  color: var(--ink-soft); font-size: 14.5px; padding-left: 18px;
  position: relative; margin-bottom: 12px; line-height: 1.8;
}
.proj-block ul li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 6px; height: 2px; background: var(--gold);
}

/* 政策变化 */
.proj-changes li { padding-left: 0; margin-bottom: 20px; }
.proj-changes li::before { display: none; }
.chg-date {
  display: inline-block; font-family: var(--serif); font-size: 13px; color: var(--gold);
  border: 1px solid var(--gold); padding: 2px 10px; margin-bottom: 8px; letter-spacing: 1px;
}
.proj-changes p { color: var(--ink-soft); font-size: 14.5px; line-height: 1.8; margin: 0; }

/* 办理流程 */
.proj-steps { list-style: none; counter-reset: step; }
.proj-steps li {
  counter-increment: step; padding-left: 44px; position: relative;
  margin-bottom: 16px; color: var(--ink-soft); font-size: 14.5px; line-height: 1.8;
}
.proj-steps li::before {
  content: counter(step); position: absolute; left: 0; top: 1px;
  width: 28px; height: 28px; border: 1px solid var(--gold); color: var(--gold);
  font-family: var(--serif); font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}

/* 文件清单 */
.proj-docs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.proj-docs h4 { font-size: 15px; color: var(--gold); letter-spacing: 1px; margin-bottom: 12px; font-weight: 600; }
.proj-docs ul li { font-size: 13.5px; padding-left: 14px; margin-bottom: 8px; }
.proj-docs ul li::before { top: 10px; }
.proj-tip {
  font-size: 13px; color: var(--ink-mute); line-height: 1.8;
  border-top: 1px dashed var(--line); padding-top: 14px; margin-top: 18px;
}

/* 收费明细表 */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.proj-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
.proj-table th {
  font-family: var(--serif); font-size: 14px; text-align: left; color: var(--ink);
  border-bottom: 2px solid var(--gold); padding: 10px 12px; white-space: nowrap;
}
.proj-table td { padding: 12px; border-bottom: 1px solid var(--line); color: var(--ink-soft); vertical-align: top; line-height: 1.7; }
.proj-table td:first-child { color: var(--ink); font-weight: 500; }
.proj-table td:nth-child(2) { color: var(--gold); font-family: var(--serif); white-space: nowrap; }
.proj-table tr:last-child td { border-bottom: none; }

/* 案例跳转卡 */
.proj-case {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  margin-top: 48px; padding: 32px 36px;
  background: var(--blue-dark); color: rgba(255,255,255,.85);
  transition: box-shadow .3s;
}
.proj-case:hover { box-shadow: 0 14px 40px rgba(15,42,79,.28); }
.proj-case-tag {
  display: inline-block; background: var(--gold); color: var(--white);
  font-size: 12px; letter-spacing: 2px; padding: 4px 12px; margin-bottom: 12px;
}
.proj-case h4 { font-family: var(--serif); font-size: 20px; color: var(--white); margin-bottom: 8px; letter-spacing: 1px; }
.proj-case p { font-size: 13.5px; color: rgba(255,255,255,.65); margin: 0; line-height: 1.8; }
.proj-case-arrow {
  flex: none; font-family: var(--serif); color: var(--gold); font-size: 15px;
  letter-spacing: 1px; border: 1px solid var(--gold); padding: 12px 22px; white-space: nowrap;
}
.proj-case:hover .proj-case-arrow { background: var(--gold); color: var(--blue-dark); }

.proj-cta { background: var(--bg); }

@media (max-width: 1000px) {
  .proj-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .proj-stats { grid-template-columns: repeat(2, 1fr); }
  .proj-docs { grid-template-columns: 1fr; }
  .proj-block { padding: 28px 22px; }
  .proj-block::before { left: 22px; }
  .proj-case { flex-direction: column; align-items: flex-start; padding: 28px 22px; gap: 18px; }
  .stat-num { font-size: 26px; }
}